Fretwork



FIG. 1 a perspective view of a fretwork, showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right side elevational thereof, the left side being identical thereto;

FIG. 4 is a top plan view thereof; and,

FIG. 5 is a bottom plan view thereof.

In the drawings, the broken lines form no part of the claimed design. 

The ornamental design for a fretwork, as shown and described. 